Antenna for wireless telegraphy.



N. J. JEPFRIES.

ANTENNA FOR WIRELESS TBLEGRAPHY. APPLICATION FILED MAY8, 1913.

1,106,945. v Patented Aug. 11, 1914.

PATENT OFFICE.

unirnn STATES ANTENNA Eon WIRELESS TELEGRAPHY. i a

To all whom it may concern:

Be it known that l, NICHOLAS J. IEFERIES, a citizen of the United States of America, and resident of Atlantic City, in the county of Atlantic and State of New Jersey, have invented certain new and useful Improvements in Antennae for Wireless Telegraphy, of which the following is a specification.

This invention relates to certain new and useful improvements in antennae for wireless telegraphy, and it has for its objects among others to provide a simple, novel, yet efficient form of antenna, which shall be portable, collapsible and extensible, of minimum weight and easily carried and handled and put up into operative position. The antenna may be employed as either a transmitter or a receiver and can be maintained in any desired position without any special support. it may be quickly hung from the limb of a tree or any other ob-' ject and as easily taken down and collapsed for transportion or storage. Other objects and advantages-of the in vention will hereinafter appear and the novel features thereof will be specifically defined by the appended claims.

The invention is capable of embodiment in a variety of forms, the preferable one only of which is herein illustrated. This form is clearly .shown in the accompanying drawings, which, with the'numerals of reference marked thereon, form a part of this specification, and in which' Figure 1 is an elevation of the antenna -partially extended. Fig. 2 is an end view.

thereof. Fig. 3 is an edge view showing the antenna collapsed ready for transportation or storage. Fig. 4 is an enlarged fragmentary detail showing the antenna partially collapsed. Fig. 5 'is an enlarged detail in elevation.

Like numerals of reference indicate like parts throughout 'the several views.

Referring to the drawings 1 designates an end portion, of which there are two, and

these ends may be of any suitable form of construction and material. In the present instance each head consists of a plurality of radiating arms 2 joined in any way, or

" .made integral, at the center. The antenna may be of any desired length.

3 are members, flexible but non-elastic to any great extent, and may be formed for instance of oil-silk or analogous substance. They pass loosely through openings 4 in Specification of petters Patent. Application filed May s, 1913. Serial No.,766,290.

' the arms 2, as seen best in Fig. 4 and their ends are connected toinsulators 5 of known orany approved form of construction. As Seen in Fig. 2 themembers 3 extend inclinedly so as to attach to the insulators at the axial center of the antenna, as seen clearly in Fig. l.

6 is the antenna wire of suitable nature; it is wound spirally extending lengthwise of the antenna, one end being attached in any suitable manner to one end 1 of the antenna as seen at 7 the other end 8 being free and designed to lead to the instruments in the operating-room. The Wire 6 is attached to the members 3 wherever they intersect as shown at 9.

Thus constructed, the antenna may be collapsed into small compass as seen in Fig. 3. When it is desired to use the same it may be supported or suspended in any suitable manner, in any desired place. By attaching a rope to one of the insulators, and throwing the rope over the limb of a tree, for instance, the antenna may be quickly l atented Aug. 11, 1914.

hauled up and put into immediate use. It

special skill in Setting it up or collaps -ing it.

Modifications in detail may be resorted to Without departing from the spirit of the invention or sacrificing any of its. advan-- tages.

What is claimed as new 1s:

1. A portable collapsible antenna comprising end members, spiral antenna Wire compressible between said end members, and supporting means connected to said antenna wire and slidably associated with said end members.

2. A portable collapsible antenna for wireless telegraph'y comprising end members movable towardand from each other, antenna wire spirally arranged between said end members, and means for supporting said antenna connected to Said Wire and loosely slidably associated with said end members.

3. A portable collapsible antenna for wireless telegraphy comprising relatively movable end members, wire disposed betweensaid end members, and means for supporting said antenna movable through the end members and attached to said wire and provided at the free ends with insulators.

4. An antenna for wireless telegraphy comprising end supports, flexiblemean S for L0 adapted for the attachment of the antenna,

and wire. wound around said flexible members and attached thereto, said wire and flexible members being designed to be forced together between the end supports.

Signed by me at-Washington,-l). C. this 15 8th day of May 1913.

NICHOLAS J. JEFFRIES. Witnesses:

' E. H. Bonn,

- JOHN SGRIV'ENER. 

